---
title: "CVE-2026-100835: Contrast - Authentication Bypass"
description: "Contrast before 1.16.0 contains a remote attestation relay attack vulnerability caused by acceptance of any valid TEE attestation report regardless of originating hardware, letting attackers impersonate trusted components by relaying reports, exploit requires network interception and control of a single TEE machine."
url: https://panop.io/threat-heartbeat/CVE-2026-100835/
---

# CVE-2026-100835 Contrast - Authentication Bypass

Contrast before 1.16.0 contains a remote attestation relay attack vulnerability caused by acceptance of any valid TEE attestation report regardless of originating hardware, letting attackers impersonate trusted components by relaying reports, exploit requires network interception and control of a single TEE machine.

CVSS base score 7.4 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100835)

## Details

Type

Authentication Bypass

Impact

Man In The Middle

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Published

27 September 2026

Updated

15 October 2026

Weakness

[CWE-295](https://cwe.mitre.org/data/definitions/295.html)

## Vendor fix

Update to version 1.16.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100835](https://nvd.nist.gov/vuln/detail/CVE-2026-100835)
- [https://github.com/edgelesssys/contrast/security/advisories/GHSA-hjgc-jc5v-fw7h](https://github.com/edgelesssys/contrast/security/advisories/GHSA-hjgc-jc5v-fw7h)
- [https://www.vulncheck.com/advisories/contrast-before-1.16.0-remote-attestation-relay-attack](https://www.vulncheck.com/advisories/contrast-before-1.16.0-remote-attestation-relay-attack)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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